.content {
    opacity: 0;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
        -ms-flex-direction: row;
            flex-direction: row;
    width: 100%;
    height: 100%;
    transition: opacity 1s ease;
  }
  
  body.ready .content {
    opacity: 1;
  }
  
  /* Headers */
  
  .header {
    position: absolute;
    z-index: 1;
    top: 0;
    width: 239px;
    padding: 0;
  }
  
  .logo {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    width: 240px;
    height: 60px;
    padding: 10px 0 10px 55px;
    color: white;
    text-decoration: none;
    background-image: url(../img/icons/icon-doc.png);
    background-size: 32px;
    background-position: 12px 13px;
    background-repeat: no-repeat;
  }
  
  header {
    position: -webkit-sticky;
    position: -moz-sticky;
    position: -o-sticky;
    position: -ms-sticky;
    position: sticky;
    top: 0;
    z-index: 2;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    width: 100%;
    height: 60px;
    padding-left: 20px;
    padding-right: 20px;
    border-bottom: 1px solid #000;
  }
  
  .logo, h2 {
    opacity: .6;
    font-size: 22px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 200;
  }
  
  .logo:hover {
    opacity: 1;
  }
  
  /* Panes */
  
  .pane {
    position: relative;
    height: 100%;
  }
  
  /* Sidebar */
  
  .sidebar {
    width: 240px;
    padding-top: 60px;
    border-right: 1px solid #000;
  }
  
  .navigation {
    overflow-y: auto;
    width: 100%;
    height: 100%;
    padding: 10px 0 20px 20px;
  }
  
  .navigation ul {
    height: 30px;
    overflow-y: hidden;
    -webkit-transition:opacity .4s ease;
    transition: opacity .4s ease;
  }
  
  .navigation ul li {
    position: relative;
  }
  
  .navigation ul li:before {
    content: "";
    display: block;
    position: absolute;
    top: 3px;
    left: 2px;
    width: 1px;
    height: 14px;
    background-color: white;
  }
  
  .navigation ul li:first-child:before {
    display: none;
  }
  
  .navigation a {
    display: block;
    padding-left: 15px;
    color: #FFF;
    text-decoration: none;
    font-size: 12px;
    line-height: 20px;
    text-transform: uppercase;
  }
  
  .navigation ul li:first-child a {
    padding-left: 0;
    padding-top: 10px;
    padding-bottom: 10px;
  }
  
  .navigation ul li a,
  .navigation ul li:before {
    opacity: .4;
    -webkit-transition:opacity .4s ease, color .4s ease;
    transition: opacity .4s ease, color .4s ease;
  }
  
  .navigation ul.active a {
    opacity: .7;
  }
  
  .navigation ul li:hover a,
  .navigation ul li:hover:before {
    -webkit-transition:none;
    transition: none;
    opacity: 1;
  }
  
  .navigation ul li.active a,
  .navigation ul li.active:before {
    opacity: 1;
    color: currentColor;
  }
  
  .navigation ul li.active:before {
    background-color: currentColor;
  }
  
  .navigation ul.active li:first-child a,
  .navigation ul.active li:first-child a:hover {
    opacity: 1;
    color: currentColor;
  }
  
  /* Code */
  
  .code-examples {
    width: 50%;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    border-left: 1px solid #000;
  }
  
  .code-pane {
    position: relative;
    border-bottom: 1px solid #000;
  }
  
  .code-pane-js {
    height: 66%;
  }
  
  .code-pane-html {
    height: 34%;
  }
  
  .code-header {
    position: absolute;
    top: 0;
  }
  
  pre {
    overflow: auto;
    font-family: 'Space Mono', monospace;
    line-height: 22px;
  }
  
  .code-output {
    width: 100%;
    height: 100%;
    padding: 80px 20px 20px 20px;
  }
  
  /* Demos */
  
  .demos {
    overflow-y: scroll;
    width: calc(50% - 240px);
    min-width: 330px;
  }
  
  article {
    width: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    -webkit-box-align: start;
        -ms-flex-align: start;
            align-items: flex-start;
    -webkit-box-pack: start;
        -ms-flex-pack: start;
            justify-content: flex-start;
  }
  
  .demos-title {
    opacity: 1;
  }
  
  .demo {
    position: relative;
    z-index: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    width: 100%;
    min-height: 200px;
    padding-top: 35px;
    border-bottom: 1px solid #000;
    cursor: pointer;
  }
  
  .demo.controls {
    padding-top: 50px;
  }
  
  .demo.active.controls {
    cursor: default;
  }
  
  .demo:before {
    content: "";
    position: absolute;
    z-index: 0;
    top: 0;
    left: 0;
    opacity: 0;
    display: block;
    width: 100%;
    height: 100%;
    background-color: currentColor;
  }
  
  .demo.active:before {
    opacity: .05;
  }
  
  .demo-content {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    text-align: center;
    width: 290px;
    height: 100%;
  }
  
  #penner .demo-content {
    padding: 25px 0;
  }
  
  #timeline .demo-content,
  #motionpath .demo-content {
    padding: 40px 0;
  }
  
  .demo-title {
    position: absolute;
    top: 0;
    left: 20px;
    width: calc(100% - 40px);
    padding: 23px 0;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #FFF;
    opacity: .7;
  }
  
  .active .demo-title {
    color: currentColor;
    opacity: 1;
  }
  
  .line {
    width: 100%;
    padding: 1px 0px;
  }
  
  .player {
    opacity: .4;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    padding-top: 20px;
    padding-bottom: 10px;
  }
  
  .player button {
    position: relative;
    display: block;
    margin: 0 0 0 -1px;
    padding: 5px 10px;
    font-size: 12px;
    text-transform: uppercase;
    border: 1px solid currentColor;
    background-color: transparent;
    color: currentColor;
  }
  
  .player button:focus {
    outline: none;
  }
  
  .active .player {
    opacity: 1;
  }
  
  .active .player button:hover:after {
    content: '';
    opacity: .3;
    position: absolute;
    left: 0;
    top: 0;
    display: block;
    width: 100%;
    height: 100%;
    background-color: currentColor;
  }
  
  .player button:first-child {
    margin-left: 0;
  }
  
  .player input {
    margin-left: 10px;
  }
  
  .text-output {
    padding-top: 10px;
    padding-bottom: 10px;
    font-size: 16px;
    color: currentColor;
    text-align: center;
    background-color: transparent;
    border: 1px solid currentColor;
  }
  
  .log {
    width: 100%;
    height: 22px;
    background: transparent;
    color: currentColor;
    border: none;
    font-size: 16px;
    text-align: center;
  }
  
  .logs {
    pointer-events: none;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    position: absolute;
    width: 100%;
    height: 100%;
  }
  
  .log:focus {
    outline: none;
  }
  
  input.progress {
    cursor: ew-resize;
  }
  
  .square,
  .circle {
    pointer-events: none;
    position: relative;
    width: 28px;
    height: 28px;
    margin: 1px;
    background-color: currentColor;
    font-size: 12px;
  }
  
  .circle {
    border-radius: 50%;
  }
  
  .triangle {
    pointer-events: none;
    position: relative;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 14px 24px 14px;
    border-color: transparent transparent currentColor transparent;
  }
  
  .small {
    width: 18px;
    height: 18px;
  }
  
  .large {
    width: 48px;
    height: 48px;
  }
  
  .stretched {
    height: 2px;
  }
  
  .shadow {
    position: absolute;
    opacity: .2;
  }
  
  .motion-path {
    position: relative;
    width: 256px;
    margin: auto;
  }
  
  .follow-path {
    position: absolute;
    top: -9px;
    left: -9px;
  }
  
  .align-center {
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
  }
  
  #cssProperties .el {
    -webkit-transform: translate3d(0,0,0);
            transform: translate3d(0,0,0);
  }
  
  /* Responsive */
  
  .header {
    width: 100%;
  }
  
  .sidebar,
  .code-examples {
    display: none;
  }
  
  .demos {
    top: 60px;
    width: 100%;
    min-width: auto;
    height: calc(100% - 60px);
    -webkit-overflow-scrolling: touch;
  }
  
  @media (min-width: 600px) {
    .header {
      width: 239px;
    }
    .sidebar {
      display: inherit;
    }
    .demos {
      top: 0;
      width: calc(100% - 240px);
      height: 100%;
    }
  }
  
  @media (min-width: 1100px) {
    .code-examples {
      display: inherit;
    }
    .demos {
      width: calc(50% - 240px);
    }
  }
  